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There are 10 professors and 20 students ...

There are 10 professors and 20 students out of whom a committee of 2 professors and 3 students is to be formed. A)Find the number of ways in which this can be done. B) Further find in how many of these committees: A particular professor is included A particular student is included  Particular student is excluded

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RD SHARMA ENGLISH-COMBINATIONS-All Questions
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